Nausea and vomiting in pregnancy, often known as morning sickness, is very common in early pregnancy.

It can affect you at any time of the day or night, and some women feel sick all day long.

Morning sickness is unpleasant, and for some women it can significantly affect their day-to-day life. But it doesn't put your baby at any increased risk, and usually clears up by weeks 16 to 20 of your pregnancy.

Some women develop a severe form of pregnancy sickness called hyperemesis gravidarum. This can be serious, and there's a chance you may not get enough fluids in your body (dehydration) or not get enough nutrients from your diet (malnourishment). You may need specialist treatment, sometimes in hospital.

Anti-sickness medication

If your nausea and vomiting is severe and doesn't improve after trying the above lifestyle changes, your GP may recommend a short-term course of an anti-sickness medicine, called an antiemetic, that's safe to use in pregnancy.

Often this will be a type of antihistamine, which are usually used to treat allergies but also work as medicines to stop sickness (antiemetic).

Antiemetics will usually be given as tablets for you to swallow.

But if you can't keep these down, your doctor may suggest an injection or a type of medicine that's inserted into your bottom (suppository).

See your GP if you'd like to talk about getting anti-sickness medication.

Risk factors for morning sickness

It's thought hormonal changes in the first 12 weeks of pregnancy are probably one of the causes of morning sickness.